In message <47AC8F1E.4090808 at arjam.net>
Robert Munro <rjmunro at arjam.net> wrote:
> That would be good, but the current top level postcodes, e.g. OX1 can be
> biased because they have lots of correct postcodes in Oxford, but a
> couple in the north sea off Scotland that pushes the average way of
> course. One solution is to take the median position of the postcodes for
> a region rather than the mean. The ultimate solution is to detect and
> remove these outliers.
Grant has written code to detect these bogus outliers, but he seems to
be having difficulty finding the right people to talk to to get them
purged from the various npe and/or ftp databases.
Tom
--
Tom Hughes (tom at compton.nu)
http://www.compton.nu/